Study guide for science chapter 10: natural resources

1. 1.What is humus?
   

2.Know about soil, does soil cover a lot of Earth’s land?

3.What is subsoil?

4.Know what bedrock is!

5.What do solar cells do?

6.Is sandy soil good to use for growing plants?

7.Why are certain resources nonrenewable?

8.What do coal and the sun have in common?

9.What is the negative effect of using nonrenewable resources?

10.What is conservation of resources?

11.What is the easiest thing to recycle?

12.Give an example of two living and nonliving things that support life on Earth!

13.Explain how solar energy works in nature.